1191064969942 has 8 divisors (see below), whose sum is σ = 1787455165176. Its totient is φ = 595246581552.

The previous prime is 1191064969891. The next prime is 1191064969949. The reversal of 1191064969942 is 2499694601911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191064969949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142946503 + ... + 142954834.

It is an arithmetic number, because the mean of its divisors is an integer number (223431895647).

Almost surely, 2^{1191064969942} is an apocalyptic number.

1191064969942 is a deficient number, since it is larger than the sum of its proper divisors (596390195234).

1191064969942 is a wasteful number, since it uses less digits than its factorization.

1191064969942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285903422.

The product of its (nonzero) digits is 7558272, while the sum is 61.

The spelling of 1191064969942 in words is "one trillion, one hundred ninety-one billion, sixty-four million, nine hundred sixty-nine thousand, nine hundred forty-two".